address 0x0:

module Signature {
    native public ed25519_verify(
        signature: bytearray,
        public_key: bytearray,
        message: bytearray,
    ): bool;
    native public ed25519_threshold_verify(
        bitmap: bytearray,
        signature: bytearray,
        public_key: bytearray,
        message: bytearray,
    ): u64;
}
